Which versions of node-calculator-40ed are malicious?

The following npm versions of node-calculator-40ed are flagged malicious: 5.0.0, 6.0.0. Treat any of these as compromised.

How do I remediate node-calculator-40ed if I installed it?

Remove node-calculator-40ed from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed node-calculator-40ed — how do I know if it already compromised me?

If node-calculator-40ed was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is node-calculator-40ed part of a known attack campaign?

Yes — node-calculator-40ed is associated with the RLMA-2025-06409 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find node-calculator-40ed across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-40ed (2 malicious versions).

Malicious package

node-calculator-40ednpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

node-calculator-40ed is a confirmed malicious npm package (MAL-2025-192829) that executes malicious code on install (malicious versions 5.0.0, 6.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-40ed (npm)

MAL-2025-192829

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall node-calculator-40ed

What this malware does

The package node-calculator-40ed was found to contain malicious code.

Malicious versions

2 flagged

5.0.06.0.0

Indicators of compromise (SHA-256)

d415f70c8429a7c543f8ac684cfe0cbc9740cd04892319df36f9a57012773905

c441ec0a4c581ca44cdcc6dbd499ff4597bc1efa5111fd407759cfcc0c2ce729

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for node-calculator-40ed (2 malicious versions).
If you installed it — respond
Remove node-calculator-40ed from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If node-calculator-40ed was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. node-calculator-40ed on npm has been identified as a malicious package (versions 5.0.0, 6.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06409

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-40ed-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database